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See detailPresurgical Sandostatin treatment in acromegaly.
Stevenaert, Achille ULg; Beckers, Albert ULg

Conference (1991)

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See detailPrêt public et droit d’auteur : le "droit de prêt", c’est pour bientôt
Habrand, Tanguy ULg

Article for general public (2006)

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See detailLe prétendu séisme de Tongres vers 600 : une invention hagiographique
Alexandre, Pierre ULg

in Ciel et Terre (1989), 105

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See detailPrétest, suivi et contrôle de la performance des produits nouveaux
Choffray, Jean-Marie ULg

in P. Joffre et Y. Simon (Ed.) Encyclopédie des Sciences de Gestion (1999)

L’objet de cet article est de présenter un ensemble cohérent de concepts et de modèles utiles en matière de prétest, de suivi et de contrôle de la performance d’un produit nouveau. L’approche suivie est ... [more ▼]

L’objet de cet article est de présenter un ensemble cohérent de concepts et de modèles utiles en matière de prétest, de suivi et de contrôle de la performance d’un produit nouveau. L’approche suivie est résolument modulaire, orientée-objet, de telle sorte que le lecteur puisse construire son propre système à partir du problème auquel il est confronté: évaluation pré-lancement, suivi en phase d’introduction et de croissance, et contrôle du marketing-mix au cours de l’étape de développement du marché. Le kit proposé rassemble les modèles de diffusion, les modèles d’intensité de réachat, les fonctions de réponse et l’analyse dynamique des coûts. Ces outils conservent leur pertinence quel que soit le couple produit-marché considéré: grande consommation, durable, industriel et/ou service. [less ▲]

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See detailPretherapeutic assessment of cerebral aneuvrysms with arterially enhanced spiral CT
Vanderschelden, P.; Flandroy, P.; Dondelinger, Robert ULg et al

Conference (1995, November 26)

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See detailPrétraitement de données en reconnaissance de formes par RNA
Schyns, Michael ULg

Master's dissertation (1993)

Les réseaux de neurones n'ont malheureusement pas que des avantages. Leur taille croît avec la quantité et la complexité des données à traiter. Or le principal inconvénient du RNA est lié à sa complexité ... [more ▼]

Les réseaux de neurones n'ont malheureusement pas que des avantages. Leur taille croît avec la quantité et la complexité des données à traiter. Or le principal inconvénient du RNA est lié à sa complexité. Plus elle est grande, plus le RNA sera difficile et coûteux à implémenter physiquement et plus son temps d'apprentissage sera grand. Pour résoudre ce problème, une solution est de prétraiter les données pour diminuer leur taille. Il nous a dès lors été demandé d'analyser trois méthodes de compression applicables au traitement par RNA : la méthode de Karhunen-Loève, la méthode LPC (Linear Predictive Coding) et la méthode NLPCA (Non Linear Principal Composant Analysis). Nous en avons ajouté une : la méthode LSP (Line Spectral Pair). Les chapitres qui y sont consacrés tenteront de convaincre le lecteur de l'efficacité de ces procédés. Nous déterminerons également comment choisir la méthode à utiliser pour un problème de classification posé à un RNA. [less ▲]

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See detailPretransplant helper T-lymphocyte determination in bone marrow donors: acute graft-versus-host disease prediction and relation with long-term survival
Winandy, Marie ULg; Lewalle, Philippe; Deneys, Véronique et al

in British Journal of Haematology (1999), 105

Helper T-lymphocyte precursor (HTLp) frequency from 19 allogeneic bone marrow donors was tested to detect weak antigenic differences with the recipient, and then compared to the outcome. HTLp frequency ... [more ▼]

Helper T-lymphocyte precursor (HTLp) frequency from 19 allogeneic bone marrow donors was tested to detect weak antigenic differences with the recipient, and then compared to the outcome. HTLp frequency was estimated in limiting dilution cultures, and HLA-DR and CD 80 expression by stimulating cells was measured by flow cytometry. 12/19 patients experienced acute graft-versus-host disease (aGVHD) grade II–IV. A good correlation was found between high pretransplant HTLp frequency and grade II–IV aGVHD (median: 1/55848 PBMNC for II–IV GVHD versus 1/ 184346 for 0–I GVHD; P¼0·008). Sensitivity was 82%, specificity 63%, negative predictive value 71% and positive predictive value 75%. Long-term survivors also had a lower HTLp median frequency (1/143354) when compared with patients who died as a result of the transplant procedure (1/22100, P < 0·001). No correlation was found between HTLp frequency and HLA-DR or CD80 expression by patient’s cells. We conclude that HTLp frequency estimation can predict, although poorly, acute GVHD risk and long-term survival. [less ▲]

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See detailPretreatment And Enzymatic Hydrolysis Of Miscanthus x giganteus: Influence Of Process Parameters
Vanderghem, Caroline ULg; Brostaux, Yves ULg; Jacquet, Nicolas ULg et al

Poster (2010, September 21)

Miscanthus x giganteus is a perennial grass which grows rapidly and gives high yields of biomass per hectare. It can be grown in poor quality soil and is non invasive. Due to its high cellulose and ... [more ▼]

Miscanthus x giganteus is a perennial grass which grows rapidly and gives high yields of biomass per hectare. It can be grown in poor quality soil and is non invasive. Due to its high cellulose and hemicellulose content, it has attracted considerable attention as a possible energy crop to produce bioethanol. Pretreatment of lignocellulosic biomass is a key step to unlocking the protective structures so that the enzymatic hydrolysis of the carbohydrate fraction to monosugars can be achieved more easily and with greater yield. In this study, Miscanthus x giganteus was delignified by a chemical pre-treatment process using a mixture of formic acid/acetic acid (1). The treated material was then hydrolyzed. By means of Box-Behnken experimental design and response surface methodology we investigated the effect of cooking time (60, 120 and 180 min), formic acid/acetic acid/water concentration (20/60/20, 30/50/20 and 40/40/20) and temperature (80, 90 and 107°C) on the residual Klason lignin content and the % of digestibility. The optimal pretreatment process parameters were identified. [less ▲]

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See detailPretreatment minimal staging for non-small cell lung cancer: an updated consensus report
Goldstraw; Rocmansb; Ball et al

in Lung Cancer (1994), 11(supp 3), 1-4

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See detailPretreatment minimal staging for non-small cell lung cancer: an updated consensus report
Barthelemy, Nicole ULg; Goldstraw; Rocmans et al

in Lung Cancer (1994), 11(3),

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See detailPretreatment of adult bone marrow mesenchymal stem cells with cardiomyogenic growth factors and repair of the chronically infarcted myocardium
Bartunek, Joseph; Croissant, J. D.; Wijns, William et al

in American Journal of Physiology - Heart and Circulatory Physiology (2007), 292(2), 1095-1104

The in vivo cardiac differentiation and functional effects of unmodified adult bone marrow mesenchymal stem cells (MSCs) after myocardial infarction (MI) is controversial. We postulated that ex vivo ... [more ▼]

The in vivo cardiac differentiation and functional effects of unmodified adult bone marrow mesenchymal stem cells (MSCs) after myocardial infarction (MI) is controversial. We postulated that ex vivo pretreatment of autologous MSCs using cardiomyogenic growth factors will lead to cardiomyogenic specification and will result in superior biological and functional effects on cardiac regeneration of chronically infarcted myocardium. We used a chronic dog MI model generated by ligation of the coronary artery (n = 30). Autologous dog bone marrow MSCs were isolated, culture expanded, and specified into a cardiac lineage by adding growth factors, including basic FGF, IGF-1, and bone morphogenetic protein-2. Dogs underwent cell injection > 8 wk after the infarction and were randomized into two groups. Group A dogs (n = 20) received MSCs specified with growth factors (147 +/- 96 x 10(6)), and group B (n = 10) received unmodified MSCs (168 +/- 24 x 10(6)). After the growth factor treatment, MSCs stained positive for the early muscle and cardiac markers desmin, antimyocyte enhancer factor-2, and Nkx2-5. In group A dogs, prespecified MSCs colocalized with troponin I and cardiac myosin. At 12 wk, group A dogs showed a significantly larger increase in regional wall thickening of the infarcted territory (from 22 +/- 8 to 32 +/- 6% in group A; P < 0.05 vs. baseline and group B, and from 19 +/- 7 to 21 +/- 7% in group B, respectively) and a decrease in the wall motion score index (from 1.60 +/- 0.05 to 1.35 +/- 0.03 in group A; P < 0.05 vs. baseline and group B, and from 1.58 +/- 0.07 vs. 1.56 +/- 0.08 in group B, respectively). The biological ex vivo cardiomyogenic specification of adult MSCs before their transplantation is feasible and appears to improve their in vivo cardiac differentiation as well as the functional recovery in a dog model of the chronically infarcted myocardium. [less ▲]

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See detailPretreatments and enzymatic hydrolysis of Miscanthus x giganteus for oligosaccharides production: delignification degree and characterisation of the hydrolysis products
Vanderghem, Caroline ULg; Jacquet, Nicolas ULg; Blecker, Christophe ULg et al

Poster (2010, February 04)

The aim of the present study is to compare two delignification methods (formic/acetic acid1 and soaking in aqueous ammonia) on Miscanthus x giganteus and to assess the suitability to produce cellobiose ... [more ▼]

The aim of the present study is to compare two delignification methods (formic/acetic acid1 and soaking in aqueous ammonia) on Miscanthus x giganteus and to assess the suitability to produce cellobiose and other oligosaccharides after enzymatic hydrolysis. Oligosaccharides have recently gotten attention for their health benefits. Two methods were compared in order to quantify lignin: the acid detergent lignin method (procedure of Van Soest most commonly employed by animal scientist and agronomists for analysis of forages) and the Klason lignin procedure. Lignin concentrations in raw material determined by both methods were different; Klason lignin value (23.5%) was greater than the acid detergent lignin concentration (12.9%). Possible reasons of these results will be discussed. Pretreatment by the formic/acid mixture showed a better deliginification rate compared to the soaking in aqueous ammonia method. Results were based on Klason lignin. Analysis of the structural carbohydrates revealed that untreated miscanthus was mainly composed of glucose and xylose. Extracted pulps by both delignification methods were hydrolysed by commercial cellulases and hemicellulases. A major challenge is the characterisation of complex mixtures of lignocellulosic hydrolysates. In this study, the hydrolysis products were separated and quantified by highperformance anion exchange chromatography with pulsed amperometric detection (HPAECPAD). This method was successfully applied to the quantitative analysis of monosaccharides (glucose and xylose) and disaccharides (cellobiose and xylobiose) formed by the enzymatic hydrolysis of pretreated miscanthus. The influence of the pretreatments on the oligosaccharides yields will be presented. [less ▲]

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See detail'Pretty Happy!'
Delville, Michel ULg

in Literary Review (2002), 46(1), 196-199

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See detailPretzelosity TMD and Quark Orbital Angular Momentum
Lorce, Cédric ULg; Pasquini, B.

in Physics Letters B (2012), B710

We study the connection between the quark orbital angular momentum and the pretzelosity transverse momentum dependent parton distribution function. We discuss the origin of this relation in quark models ... [more ▼]

We study the connection between the quark orbital angular momentum and the pretzelosity transverse momentum dependent parton distribution function. We discuss the origin of this relation in quark models, identifying as key ingredient for its validity the assumption of spherical symmetry for the nucleon in its rest frame. Finally we show that the individual quark contributions to the orbital angular momentum obtained from this relation cannot be interpreted as the intrinsic contributions, but include the contribution from the transverse centre of momentum which cancels out only in the total orbital angular momentum. [less ▲]

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